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Standard deviation

en.wikipedia.org/wiki/Standard_deviation

In statistics, the standard deviation is a measure that is used to quantify the amount of variation or dispersion of a set of data values. A low standard deviation  ...

Standard Deviation and Variance - Math is Fun

www.mathsisfun.com/data/standard-deviation.html

The Standard Deviation is a measure of how spread out numbers are. Its symbol is σ (the greek letter sigma). The formula is easy: it is the square root of the ...

Standard Deviation - Robert Niles

www.robertniles.com/stats/stdev.shtml

A simpler explanation of standard deviation, written by a former math-major- turned-journalist who likes to explain math to people don't understand or just plain ...

Statistics: Standard deviation | Variance and standard deviation ...

www.khanacademy.org/math/probability/descriptive-statistics/variance-std-deviation/v/statistics-standard-deviation

Review of what we've learned. Introduction to the standard deviation.

Standard Deviation Calculator - Calculate Mean, Variance

www.easycalculation.com/statistics/standard-deviation.php

Standard Deviation (SD) is the measure of spread of the numbers in a set of data from its mean value. Also called as SD, Standard Deviations symbol σ (sigma).

Standard Deviation Definition | Investopedia

www.investopedia.com/terms/s/standarddeviation.asp

1. A measure of the dispersion of a set of data from its mean. The more spread apart the data, the higher the deviation. Standard deviation is calculated as the ...

Standard Deviation -- from Wolfram MathWorld

mathworld.wolfram.com/StandardDeviation.html

Physical scientists often use the term root-mean-square as a synonym for standard deviation when they refer to the square root of the mean squared deviation of ...

Standard Deviation - David Lane

davidmlane.com/hyperstat/A16252.html

The variance and the closely-related standard deviation are measures of how spread out a distribution is. In other words, they are measures of variability.

Standard Deviation | How and when to use the Sample and ...

statistics.laerd.com/statistical-guides/measures-of-spread-standard-deviation.php

A guide on the standard deviation including when and how to use the standard deviation and examples of its use.

Standard Deviation Calculator

www.calculator.net/standard-deviation-calculator.html

Free online tool to calculate the standard deviation, variance, mean, sum, and confidence range for given numbers. Also find hundreds of other free online ...

Answers
Standard Deviation
1. A measure of the dispersion of a set of data from its mean. The more spread apart the data, the higher the deviation. Standard deviation is calculated as the square root of variance. 2. In finance, standard deviation is applied to the annual rate... More »
How to Calculate Standard Deviation
Determining the standard deviation is important in mathematics in order to measure accuracy. Calculate the standard deviation with tips from a teacher in this free video on math and science.... More »
Difficulty: Moderate
Source: www.ehow.com